Thanks for your inquiry. If you are using Aspose.Words, please use HtmlSaveOptions.ExportRoundtripInformation property to specify whether to write the roundtrip information when saving to HTML, MHTML or EPUB. Default value is true for HTML and false for MHTML and EPUB.
If you want to use Aspose.Words for Cloud, please use saveAs resource with ExportRoundtripInformation html save options. Please read about saveAs resource from here: